Circular-shuttle embroidery-machine.



M. SCHOENFELD.

CIRCULAR SHUTTLE EMBROIDERY MACHINE.

APPLICATION FILED APR.29, 1913.

THE NORRIS PETERS co. PHO m-urno. wAsmficrmv, 0 L.

Patented Jun 8, 1915.

3 SHEETS-SHEET I.

. Mia/mas ,5C/VOE/VFELD ATTORNEY M. SCHOENFELD.

CIRCULAR SHUTTLE EMBROIDERY MACHINE.

APPLICATION FILED APR. 29. 1913.

1 1 42,534; Patented June 8, 1915.

3 SHEETS-SHEET 2.

THE NORRIS PETERS 60., PHOTOVLITHOT. WA HINL||UN, u, 1;

M. SCHOENFELD.

CIRCULAR SHUTTLE EMBROIDERY MACHINE.

APPLICATION FILED APR. 29, 1913- 1,142,534, Patented June 8, 1915.

3 SHEETSSHEET 3- Fig.6.

R 3 SCf/OE/l/FEL a Arron w y THE NORRIS PETERS CO.. PHOTO-L'THQ, WASHINGTON, D c.

UNITED STATES PATENT OFFICE.

MORRIS SCHOENFELD, OF RORSCHACH, SWITZERLAND.

CIRCULAR-SHUTTLE EMBROIDERY-MACHINE.

Application filed April 29, 1913.

To all whom it may concern Be it known that I, MORRIS SoHoENrELo, a. citizen of the United States, and resident of Rorschach, Canton of St. Gall, Switzerland, have invented new and useful Improvements in Circular-Shuttle Embroidery-Machines, of which the following is a full, clear, and exact specification.

Hitherto the circular shuttles in shuttle embroidery machines have been driven by toothed wheels. There is also known a circular shuttle driving mechanism in which the circular shuttles are driven by rectilinearly reciprocating driver bars. These constructions have on the one hand the disadvantage of making a great noise and giving a severe blow, and on the other hand, there are certain complications because a greater number of driver bars are necessary partly for the turning, partly for the propelling of the shuttles through the thread loop.

The present invention has for its object to effect the driving of the circular shuttles by means of driver bars which are always preferable to a toothed wheel mechanism on account of the less noise and the smaller wear and to do this more advantageously than hitherto.

The improved circular shuttle driving mechanism is characterized by the feature that the driver bars are actuated by an oscillating movement in such a manner that the drivers placed upon them receive the necessary swinging motion for the positive drive of the circular shuttles.

In the drawings are illustrated various constructional forms of the improved shuttle driving mechanism.

Figure 1 shows by partial plan view one form of the mechanism in which the driver bars are moved toward the material plane and away therefrom each by means of a lever oscillating upon a fixed pivot, while a simultaneous longitudinal motion is imparted to them by means of a special lever and cam device. Fig. 2 shows a partial plan view, with parts in section, of the aforesaid lever and cam device. Fig. 3 is a transverse section corresponding to Fig. 1 and shows the drivers and the embroidering needle for one shuttle in their operative positions. Fig. 4 is a partial plan view of another form in which the driver bars are supported directlv on driving cranks. Fig. 5 shows a transverse section of Fig. 4. Fig. 6 shows a modification in the actuation of the aforesaid Specification of Letters Patent.

Patented June 8, 1915.

Serial No. 764,340.

driving cranks. Fig. 7 shows by a similar plan view a modified form wherein the driver bar motion is produced by two components of motion, the driver bars being movable on an oscillating lever, but firmly journaled, whereas the oscillating lever itself can be moved in the direction of the shuttle board. Fig. 8 shows a transverse section of Fig. 7. Fig. 9 shows a modified construction in which the guide tracks for the shuttles are pivoted to the shuttle board, thus allowing to remove the shuttle tracks with the shuttles out of the reach of the needles. Fig. 10 is a transverse section of Fig. 9. Figs. 11 and 12 show the said pivotal arrangement of the shuttle tracks in its combination with the driver mechanism. Fig. 13 shows on an enlarged scale cross section through a square part of one of the drivers of the con struction illustrated by Figs. 7 and 8.

In Figs. 1 and 3 the circular shuttle is marked 1. It has a thread outlet hole 2 placed eccentrically to the axis of motion of the shuttle, as usual. so that on the swinging motion of the shuttle obtained by the action of the drivers 3 and 4 which have a fingerlike form, the shuttle thread may receive the necessary tension in the one terminal position, while in the other terminal position the shuttle thread is drawn out of the shuttle ready for the next stitch. The driver 3 for each shuttle is attached by aid of a hinge 5 to the driver bar 6 so that it can be folded over and is usually held by a spring 7 in the working position. The other driver bar 8 supports its drivers 4 in like manner as the first described by aid of a hinge and a spring 7. The shuttle board is marked 9, and the stitch plate 10.

In the described construction the drivers, when a shuttle has to be taken out of its track, can be easily turned over and then the operator can get at the shuttle easily and conveniently. It is also possible with each shuttle to turn over only one, for instance, the upper driver, and to leave the lower driver in the working position.

The shuttle board 9 is provided with bearings 13, which bearings carry fixed bolts 11, on which bent levers 15 can oscillate. These bent levers are actuated by the drawbars 16 and they support little sockets 17 in which the driver bars 6, 8 are supported so as to be axially displaceable. Through a lever and cam device described hereinafter with reference to Fig. 2, the bent levers 15 are set in operation to oscillate to and fro by means of the drawbars 16, while at the same time the driver bars 6, 8 receive from the same aforesaid device a reciprocating to and fro movement in their longitudinal direction, with the result that the driver bars 6, 8 and with them the drivers execute a swinging or oscillating motion (crank motion) which is so transmitted by means of the drivers 3, 4 to the circular shuttles that these latter are circularly moved to-andfro or oscillated in their respective circular guide tracks. The device for producing this resulting movement for the shuttles is represented in Fig. 2. The driver bars 6, 8 are so pivoted to a three arm lever 54 under the influence of a spring, which lever is pivotally supported at 53 and is moved to-and-fro by means of a double cam disk 52 by means of which the driver bars receive an alternately to-and-fro longitudinal displacement in opposite directions. Likewise, the rods 16 which efiect according to Fig. 1 the oscillating motion of the bent levers 15, are pivoted to a multiple armed lever 55 under spring action which revolves on a pivot at 57 and is moved by means of an eccentric disk 58. The two disks 52, 58 are fixed upon the common driving shaft 59 so that when this latter revolves the bent lever actuating rods 16 and the driver bars 6, 8 themselves are set in motion, in order to effect the desired motion for the oscillating drivers and the shuttles.

In the construction illustrated in Figs. 4 and 5, the oscillating crank motion of the drivers 3 and 4 of each row is effected in the following manner: Upon a crank 18 which is supported by a pivot 19 in the bearing 13 on the shuttle board 9, there is placed a little frog 20 which is fixed to the respective driver bar 6 or 8. The latter supports the drivers 3 (the upper one) or 4 (the lower one). The drivers are themselves revolubly supported upon their respective carrying bars here shown as round, and can be made fast detachably in any suitable manner in working position upon it. For instance, they may each be secured by a spring catch 25 which engages in a side notch of the driver and thereby prevents any accidental angular dis placement thereof upon the driver bar. The actuation of the crank 18 is effected by means of a toothed wheel 26 which is set in oscillatory motion by means of a rack 27. In this motion the finger-like drivers 3, 4 receive a regular to-and-fro crank or circular motion which is directly transmitted to the shuttles.

Instead of a toothed wheel for the actuation of the cranks 18 there may also be used a revolving belt pulley 28 (Fig. 6) which is itself set in rotary motion to-and-fro by means of the belts 29, 30, these belts being fastened to a reciprocating rod 31, so that on longitudinal displacement of the rod 31,

there occurs an oscillatory motion of the belt pulley 28.

According to Figs. 7 and 8, the motion of the driver bars is obtained in like manner as in Fig. l as the resultant of two component motions. The driver bars 6, 8 are carried on the pivots 33 of the bent levers 34 and can be set in oscillatory motion by means of the latter, which can themselves be actuated by the head bolts 35 and rods 36. These levers 34 are supported in bearings 37 which are secured to sliding rods 39 moving in bearings 38 of the shuttle board 9. By means of the levers 34 there is caused an oscillating motion in the driver bars 6, 8, which does not quite correspond to the correct motion which the drivers are required to execute, but which is corrected by the suitable longitudinal displacement of the rods 39.

Instead of the drivers 3, 4 being on hinged supports on the driver bars 6, 8 as shown in Fig. 1, they are here so arranged that it becomes possible to rotate them on their own longitudinal axis and thereby so to remove them from the shuttle tracks after they have been drawn back a little. For this purpose the drivers 3, 4 are provided at their rear ends to which access is easy with a square part which renders any unintentional turning of the driver upon its longitudinal axis impossible, because a leaf spring 12 always presses it down upon its support (the driver bar). If, however, the driver be drawn back a little then the square end thereof comes out of the reach of the leaf spring, and only the round shaft part of the driver is there, which olfers no resistance to the turning of the driver.

The leaf spring 12" has a U-like bent portion (Fig. 13) forming a kind of clasp, taking over the square part of the drivers so as to retain the latter in their operative position. This U-like bent portion of the leaf spring does not prevent the drawing back and subsequent turning of the drivers.

In Figs. 9, 10, 11 and 12 there is illustrated a construction of circular shuttles with a shuttle track 41 which can be turned over on its support. The shuttle track 41 is pivoted by a hinge 42 on the shuttle board 9, but it is capable of being fixed thereon; it can thus be brought by turning out of the reach of the embroidering needles so that the shuttle is easily accessible.

\Vhat I claim is:

1. In shuttle embroidery machines, a plurality of circularly movable shuttles, coupling means on their periphery, a longitudinally and transversely movable driver bar carrying a plurality of finger-like drivers fixed thereon for directly engaging with said coupling means of the shuttles, and driving means for moving said driver bar at the same time longitudinally and transversely parallel to itself so as to impart a ,circular motion to said drivers for directly rotating the shuttles.

2. In shuttle embroidery machines, a plurality of circularly movable shuttles, several parallel driver bars carrying a plurality of drivers for engaging in such a manner that each shuttle is engaged by a driver of each driver bar and driving means for moving said driver bars at the same time longitudinally and parallel to themselves for rotating the shuttles.

In shuttle embroidery machines, circularly movable shuttles, movable driver bars, drivers for engaging with said shuttles, movably mounted on said driver bars so as to be capable of being discharged from the corresponding shuttles, and driving means for imparting to said driver bars an oscillatory to-and-fro movement for rotating the shuttles.

4. In shuttle embroidery machines, circularly movable shuttles, movable driver bars, drivers for engaging With said shuttles, mounted by means of a spring acted hinge on said driver bars so as to be capable of being disengaged from the corresponding shuttles, and driving means for imparting to said driver bars an oscillatory to-and-fro movement for rotating the shuttles.

5. In shuttle embroidery machines, circularly movable shuttles, movable driver bars carrying drivers for engaging With said shuttles, oscillating bent levers connected to thereon, circular tracks in said board for the shuttles, said tracks being displaceable with regard to the shuttle board, movable driver bars carrying drivers for engaging with said shuttles, means for allowing disengagement of the drivers from the shuttles, and driving means for imparting to said driver bars an oscillatory to-and-fro movement for rotating the shuttles.

7. In shuttle embroidery machines, embroidering needles, circularly movable shuttles, movable driver bars carrying drivers for engaging with said shuttles and driving means for moving said driver bars at the same time longitudinally and parallel to themselves alternately toward and from the embroidering needles in order to produce an oscillatory motion on the shuttles.

In Witness whereof I have hereunto signed my name this 15th day of April, 1913, in the presence of two subscribing Witnesses.

MORRIS SCHOENFELD. lVitnesses CAESAR LOEB, FRIEDRICH STEINER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

